JP3398247B2 - Mud solidification material mixing processing device and mud processing system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mud solidifying material mixing treatment apparatus and a mud treating system for mixing hydrated mud with lime and cement-based solidifying material to solidify.

[0002]

2. Description of the Related Art When dumping dredged mud in a landfill,
In order to keep the water content low, the mud is being solidified using lime and cement-based solidifying materials.

An apparatus for mixing and processing such a solidified mud material includes: When a predetermined amount of mud is stored in one mud pressure feeding tank of two mud pressure feeding tanks, compressed air is supplied into the mud pressure feeding tank. In a mud pumping system that pumps mud in a mud pumping tank to a remote place through a mud pipe, a solidifying material is injected into the mud pipe and solidified and mixed in the mud pumped in a complicated flow in the mud pipe. Method of treatment: In the above-mentioned mud pressure-feeding system, a method has been proposed in which the solidifying material is directly charged into the mud-pressure feeding tank.

[0004]

However, the above method can be applied only to a mud pressure feeding system in which mud is pressure-fed by compressed air through the mud pipe, and the mud in the mud pipe is pressed by a piston pump or the like. However, it cannot be applied to the transfer method.

Further, in the above method, it takes time to sufficiently stir the solidifying material and the mud in the large capacity mud pumping tank, and the mud is stirred more than necessary.

An object of the invention according to the present application is to reliably mix the solidifying material and the mud regardless of the transfer method of the mud.

[0007]

Mud solidifying material mixing process equipment to achieve the desired according to the object means and action for solving] The present application invention, the solidifying material supply means for supplying a solidifying material for the mud solidification of a certain amount,
The solidified material injecting means for continuously transferring the solidified material from the solidified material supply means from the supply side toward the injection end side, and the mud continuous transfer section for continuously transferring the mud in one direction, followed by the mud A mud solidification unit having a mud stirring unit for stirring and discharging the mud, and a mud mixing treatment unit in which the solidification material from the injection end of the solidification material injection unit is injected between the mud continuous transfer unit and the mud stirring unit. In the material mixture processing apparatus, the solidified material injection means
The screw shaft along the axial direction in the cylindrical casing
Is rotatably provided, and the mud mixing treatment means is a cylindrical case.
The continuous transfer section for mud and the stirring section are formed in the housing.
The rotating shaft is rotatably installed,
The solidifying material injection means is arranged on the means .

According to this construction, the mud solidifying material injection means
Pouring the solidified material into the mud mixing treatment means by the screw shaft.
The solidification material does not become clogged at the inlet,
It can be injected into the soil mixing processing means,
Together with the chemical injection means, it is formed into a cylindrical shape to
Since it has, the mud mixing processing means and the solidifying material injecting hand.
You can arrange the steps up and down, making the entire device compact.
Can be planned.

[0009]

[0010]

[0011]

[0012]

The first construction of the mud treatment system for realizing the object of the invention according to the present application is to feed the mud from the mud discharge side of the mud mixing treatment means in the mud solidifying material mixing treatment apparatus having the above-mentioned construction. In order to discharge the mud in the mud storage tank unit, which comprises one or a plurality of mud storage tanks, a mud receiving hopper provided on the upstream side of the mud transport of the mud mixing processing means, and the mud in the mud storage tank to a remote location. Of the mud, and a pressing and transferring means for moving the mud treated by the mixing processing means while pressing the inside of the mud sending tube. The mud pressing tank unit pressure-feeds the mud and the pressing and transferring means. characterized in that it has been configured to be able to switch between the Ru good transport. In this configuration, for example, when dredged mud is put into the mud receiving hopper, the mud mixed with the solidifying material is automatically stored in the mud storage tank for pumping, or the piston pump, etc. It is also possible to transfer by a pressure transfer means using.

The second construction of the mud treatment system which realizes the object of the invention according to the present application is the mud treatment system having the construction described above.
In the stem, the mud pumping tank <br/> click unit arranged in the center of the barge body, and solidifying material storage means for storing the mud solidified material before and after, the solidifying material supply of the mud solidifying material mixing apparatus Means are arranged, and a transfer means for transferring the solidified material from the solidified material storage means to the solidified material supply means is arranged between the solidified material storage means and the solidified material supply means.

With this configuration, each device constituting the mud treatment system can be effectively arranged on the berth.

[0016]

1 to 3 show a first embodiment of the present invention.

In FIGS. 1 and 2, reference numeral 1 is a barge, and two tank units are provided at the center in the front-rear direction to form a tank unit for temporarily storing mud (in this embodiment, two tank units are provided, but one is provided). , Or may be three or more), and a cement silo 3 for storing cement, which is a mud solidifying material, is arranged in front of it. Further, behind the mud storage tank 2, there is a solidifying material receiving hopper 4 constituting solidifying material supplying means, and a weighing cell for rotating and dropping downward when the solidifying material falling from the solidifying material receiving hopper 4 reaches a predetermined amount. The rotary feeders 5 forming the above are arranged above and below.

[0018] 6 in cement pressed screw conveyor constituting the solidifying material injection means, extend the port and starboard direction of barge 1, as shown in FIG. 3, the rotary feeder 5 is attached to one end. In this cement press-fitting screw conveyor 6, the screw shaft 6b is rotated in a predetermined direction by the drive of the motor 6a, and the cement, which is a solidifying material, is transferred toward the tip direction of the screw shaft 6b, and the cement is mixed in the mud mixing treatment means described later. It is designed to be injected into. Further, the casing 6d is provided with a water supply port 6c, and the supplied water and cement as a solidifying material are agitated by the screw shaft 6b (by providing a notch in a part of the blade of the screw, It has an action) and is slurried to improve the mixing processability with mud after pouring.

Reference numeral 7 denotes a mixing screw which is a means for mixing and mixing mud into which the solidifying material is injected from the cement press-fitting screw conveyor 6 arranged at the upper part, and is the same as the screw shaft 6a of the cement press-fitting screw conveyor 6 along the port side direction. The two rotary shafts 7a are arranged side by side in the casing 7b, and the mud from the mud receiving hopper 8 provided on one end side is transferred by the conveying screw section 7c formed on the one end side of the rotary shaft 7a. It is conveyed toward the other end. Further, the rotating shaft 7a is provided with a stirring paddle 7d on the other end side of the solidifying material injecting part, and the solidifying material injected by the cement press-fitting screw conveyor 6 in the solidifying material injecting part and the conveying screw part 7c. The mud carried by is stirred by the stirring paddle 7d and mixed.

The mud that has been stirred and mixed with the solidifying material by the mixing screw 7 drops from the conveying end portion and is supplied to the mud conveying screw conveyor 9 extending in the front-rear direction of the barge 1.

The mud conveying screw conveyor 9 is
The mud is transported onto each mud storage tank 2 by the forward rotation of the transportation screw 9a, and the mud is dropped and supplied to each tank. The mud is conveyed toward the piston pump 10 by the reverse rotation of the conveying screw 9b.

The supply of mud to the mud storage tank 2 is as follows.
Alternately, when a certain amount of mud is stored in one mud storage tank 2, the mud supply port of that tank (not shown)
Is automatically closed, the mud supply port (not shown) of the other mud storage tank 2 is automatically opened, and the mud that has been mixed with the solidifying material from the mud transport screw conveyor 9 has been stored in the other mud It is dropped and supplied into the tank 2.

When a predetermined mud is stored in the mud storage tank 2, compressed air is supplied into the mud storage tank 2 so that the mud in the tank is pumped to a remote place all at once through a mud pipe. Is pumped.

On the other hand, when the mud is fed to the piston pump 10 by the reverse rotation of the mud conveying screw conveyor, the mud is intermittently pressed but is sent to a remote place in the mud pipe. Of course, if a plurality of piston pumps 10 are prepared and operated in a fixed cycle, more continuous mud feeding can be realized.

Reference numeral 11 denotes a conveyor for supplying the cement, which is the mud solidifying material of the cement silo 3, to the solidifying material receiving hopper 4 so that the powdery solidifying material can be conveyed in a sealed state.

In the construction of the present embodiment described above, two methods, that is, a method of pumping mud by alternately operating the two tanks 2 and a method of mud pumping by the piston pump 10, can be selectively used. . Here, since the mud has already been mixed and treated with the solidifying material before the mud is supplied to the tank and the piston pump, both types can be used without any trouble.

When arranging such equipment in a limited space on the pontoon, a silo 3 which is a heavy object is arranged in front of the tank 2, and other equipment is arranged in the rear of the tank. A well-balanced arrangement can be made for the ship 1. Furthermore, since the cement press-fitting screw conveyor 6 and the mixing screw 7 are formed in a tubular shape that is long in the port and starboard directions and are arranged vertically, it is possible to reduce the vertical height of the entire device. .

[0028]

According to the first aspect of the invention, the mud mixing processing means can perform the mixing processing of the mud and the solidifying material while the mud is being transported in one direction. Therefore, since the mud discharged from the mud mixing processing means is evenly mixed with the solidifying material, when the mud is transferred to a remote place through the mud pipe by a pressure-feeding method thereafter, it is transferred while pressing with a piston pump or the like. It can be applied even in the case of the method. In addition, the mud solidification material injection means
Since it is injected into the mud mixing processing means by the screw shaft,
The solidification material does not become clogged at the inlet and the mud mixing processing
It can be injected into the corrugated stage, and the mud mixing processing means and the solidification material injection
Together with the step, it is formed in a tubular shape and has a casing
Therefore, the mud mixing processing means and the solidifying material injection means are moved up and down.
It can be placed in the same position and the overall size of the device can be reduced.
it can.

[0029]

According to the second aspect of the present invention, for example, when dredged mud is put into the mud receiving hopper, the mud mixed with the solidifying material is automatically stored in the mud storage tank for pressure feeding. It can be stored or transferred by pressing transfer means using a piston pump or the like.

According to the third aspect of the present invention, it is possible to effectively arrange each device constituting the mud treatment system on the berth.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

2 is a cross-sectional view of FIG.

[Fig. 3] Vertical sectional view of cement press-fitting screw conveyor and mixing screw

[Explanation of symbols]

One ship 2 mud storage tank 3 cement silos 4 Solidifying material receiving hopper 5 Rotary feeder 6 Cement press fit screw conveyor 7 mixing screw 8 Mud receiving hopper 9 Conveyor screw conveyor 10 piston pump 11 conveyor

Claims (3)

(57) [Claims] 1. A solidification material supply means for supplying a fixed amount of solidification material for solidifying mud, and a solidification material injection for continuously transferring the solidification material from the solidification material supply means from a supply side toward an injection end side. Means and a mud continuous conveying section that continuously conveys the mud in one direction, and a mud stirring section that stirs and discharges the mud are provided, and the solidification material from the injection end of the solidification material injection means is the mud. In the mud solidification material mixing processing device having a mud mixing processing means injected between the continuous transport section and the mud stirring section, the solidification material injection means is arranged in an axial direction in a cylindrical casing.
A screw shaft is rotatably installed along the
The means for treating is the above-mentioned continuous transfer section for mud in a cylindrical casing.
A rotating shaft provided with the agitator is rotatably provided.
The solidifying material injecting means on the mud mixing processing means.
Mud solidifying material mixing apparatus, characterized in that the placed. 2. A mud pressure feed tank unit comprising one or a plurality of mud storage tanks for storing mud from the mud discharge side of the mud mixing treatment means in the mud solidification material mixing treatment apparatus according to claim 1. , A mud receiving hopper provided on the upstream side of the mud transportation of the mud mixing processing means, a mud pipe for discharging the mud in the mud storage tank to a remote location, and the mud processed by the mixing processing means. and a pressing transfer means to move while pushing the said transmission mud pipe, characterized the pumping mud by該泥earth pumping tank unit, that it has configured to be able to switch between a transfer that by the pressing pressure transfer feed means mud Processing system. 3. The method according to claim 2, wherein the central portion of the pontoon body is
Wherein placing the mud pumping tank unit, and solidifying material storage means for storing the mud solidified material before and after, the solidifying material supply means of the mud solidifying material mixing apparatus arranged, solidifying material supplied from the solidifying material storage means A mud treatment system characterized in that a transfer means for transferring the solidified material to the means is arranged between the solidified material storage means and the solidified material supply means.